Calling function input arguments

I have two different function m files and now wish to extract its elements say one function is gamma(a,b,c..) and another function beta(a,b,c..) . I wish to extract the first input elements of both functions in the same gamma function file or in some another function. Is that possible without making gamma and beta execute the other commands stated inside its body and just using the input arguments ? Thanks.

[Walter Roberson]

Extract as strings? i.e., given a function name, indicate what it calls its arguments?